The true answer of covalent compounds is: c. they have low melting and boiling points.
covalent compounds is form of two or more nonmetal atoms bond by sharing valence electrons.
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Answer:
Aluminium was named after alum, which is called 'alumen' in Latin. This name was given by Humphry Davy, an English chemist, who, in 1808, discovered that aluminium could be produced by electrolytic reduction from alumina (aluminium oxide), but did not manage to prove the theory in practice.
Explanation:
By determining the period that the element is in. For example, Calcium is in period 2 therefore its valence electron is located on energy level 2.
Add 3 zeros at the end to convert to milliliters.
550,000 milliliters.